2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/59196Segre proved that a smooth cubic surface over Q is unirational iff it has a rational point. We prove that the result also holds for cubic hypersurfaces over any field, including finite fields.11 pages, LaTeXAlgebraic Geometry14G05 14G15 (Primary) 11G25 11D25 (Secondary)text